Ray Diagram - GCSE Physics Definition

A ray diagram is a simple drawing used in physics to show how light travels and behaves when it hits objects like mirrors or lenses. By drawing straight lines with arrows, called rays, you can see the path light takes. In a ray diagram, you usually start by drawing rays from a light source or an object, showing their direction and how they reflect off surfaces or bend when passing through lenses. This helps visualise important concepts like reflection, refraction, and image formation, making it easier to understand how light works in everyday life.